Repetition - Iteration

Repetition is the use of a for loop to execute one piece of code over and over. There are multiple ways to create a for loop though. These are:

• While uses one condition that which if met, will repeat the code.

1              while (true)
2                 {
3                    x ++
4                 }

• For loops intialise a variable, check a condition and perform an action. This is done before each iteration.

1 for (int i = 0; i <= 1000000; i++)
2                     {
3                     }

• Do while is the same as a while, however it doesn't check until it has done one iteration

1  do {
2                                           x ++
3                                          }
4                                         while (true)